Incandescent gas-mantle.



J. I. ROBIN & o. WHITE'. INCANDSCENTI GAS MANTLE.

Patented June 23, 1914 l MJ j gy@ Z 6 JACOB IGNOT ROBIN AND CRYSTOBEL WHITE, OF LONDON, ENGLAND.

INCANDESCENT GAS-MANTLE.

.To all whom it may concern Be it known that we, JACOB IGNOT ROBIN, a citizen of the United States of America, and residing at 54 Cheapside, in the county of London, England, and CRYsToBnL WHITE, a subject of the King of Great Britain andA Ireland, and residing at 30 Randolph Gardens, in the county of London, England, have invented certain new and useful Improvements in Incandescent Gas-Mantles, of which the following is a specification.

This invention relates to inverted incan-1 descent gas mantles, and has for its object to: provide a mantle which can be very simply` and cheaply produced, requires no skilled labor in its construction and requires no special packing when the mantle is to be moved from one place to another.

The invention consists in forming the` mantle from a number of flexible loose strands or threads of any suitable materialf impregnated with a solution of rare earth;

compound.

rI`he invention also consists in details hereinafter referred to.

In the accompanying drawings, which illustrate several modes of carrying` out theinvention, Figures 1 and 2 are respectively a plan and elevation illustrating one form ofI mantle. Fig. 3 is a plan showing the mantle half completed. Figs. 4c and 5 are elevations of two further forms. Fig. 6 is a view illus-` trating the shape assumed by the mantle after incineration. Fig. 7 is an elevation illustrating a convenient form of packing device which may be used.

In carrying out the invention according to one mode the mantle is formed from any convenient number of flexible strands or threads of a suitable material impregnated with a solution of thorium or cerium nitrate or other rare earth compound. The threads may be fastened at their top ends to any suitable form of mantle holder in any suitable manner, for example by tying or pasting or by means of a split or other ring adapted to fit tightly over the mantle-holder and to hold the threads in place, while the lower ends of the threads may be assembled and fastened together by tying, pasting or other suitable means. The mantle is then ready for use, and as the threads are perfectly flexible no danger of breaking the mantle is to be feared when the same is transported from one place to another, and

Specification of Letters Patent.

Application filed October 8, 1910.

Patented J une 23, 1914.

Serial No. 586,002.

y the mantle requires no special packing for this purpose.

Although the mantle is ready for use as above described it is preferred, before using it, to stiften the lower end with any suitable stiliening or pasty fluid, such as a mixture of paraffin wax and petrol, collodion or the like.

Vhen the mantle is to be used it is fixed to the gas burner in the usual manner and burnt, and it will assume its proper bulb or bowl-like shape, as shown in Fig. 6, when the mantle has been incinerated and the gas pressure is turned on, whatever shape it may previously have assumed. In this condition, however, the mantle will, to a certain degree necessary to avoldrdestructlon by ordinary and even extraordinary vibration or agitation, maintain its flexible character while lighted or after extinguished, and this is especially due to the fact that the threads may have independent movement.

Figs. l and 2 show a form of a mantle in which the threads or strands are secured to hooks or wire projections a secured to the mantle holder ZJ (Fig. 3). When the threads have been secured t0 the hooks a, the latter are pressed close against the holder b (Fig. 2) and when the lower ends of the threa s are fastened together, the mantle is completed. V

Figs. t and 5 show two forms of mantle in which. the threads are tied to the mantleholder 'by means of asbestos thread or the like, the threads in Fig. 5 being given a folded or zigzagged form in any suitable manner, as by being passed between toothed or corrugated rollers. The threads are preferably splayed out at the bottom, as shown, and in some eases they may be tied to the mantle-holder in the reverse direction to that shown, and then the mantle is turned inside out.

A convenient form of packing device which may be used with the improved mantles, is shown in Fig. 7 and consists of one or more pegs, 0, eoned or tapered to suit the inclina-tion of the mantle, preferably so that when the mantle Z is placed upon its peg in an inverted position, the mantle holder b just fits over the peg c the pegs c being also y is slipped over it and pulled down tight so that, on removingl the mantle and paper cone, the mantle is found to be lying snugly therein. The Whole may, if desired, be further Wrapped in oiled silk or silver foil or the like to keep it air tight.

Instead of the above arrangement, We may employ a tapered form to lit the inside of the mantle and on which the mantle is placed.

Our invention is not confined to any particular number of strands or threads nor to any particular Way of arranging the same provided that the threads are separate and not interwoveen, foreXample the threads may be formed of straight lengths extending from end to end of the mantle orthe threads may be crossed or zigzagged or tied at various intersecting points. Similarly our invention is not confined to any partie ular solution with which the threads or strands are to be impregnated as the essential feature of our invention consists in the formation of an incandescent mantle inverted or upright from a number of loose flexible or resilient strands or threads.

Having now described our invention what We claim as new and desire to secure by Letters Patent is l. An incandescent gas mantle formed from a plurality of separate threads impregnated With a solution of suitable rare earth compound, said threads being secured at one end to a mantle-holder and having their outer ends joined to provide a flared portion.

2. An incandescent gas mantle formed from a plurality of separate threads im` pregnated With a solution of suitable rare earth compound, said threads being secured at one end to a mantle-holder and having their other ends longitudinally disposed and connected in coincident relation to provide an interior opening.

3. An incandescent gas mantle formed from a plurality of separate threads impregnated iv'th a solution of suitable rare earth compound, said threads being secured at one end te a. mantle-holder and having their other ends joined to provide a flared portion, said flared portion being reinforced by ya stifening iluid.

j and held thereon by bending the projections against the holder, the loiver ends of the threads being` in contact and bound together.

5. An incandescent gas mantle formed from a plurality of separate threads capable of longitudinal distention, said threads being secured at one end to a mantle holder G5 in relatively circular form and having` their other ends joined to provide an interior opening.

6. An incandescent gas mantle formed from a plurality of cloth strands iinpregnated with an incandescent material, said strands being' anchored exteriorly at one end to a mantle holder and at their other end to provide an opening to permit the llame to impinge the sides and under surface 7r of the mantle when ignited.

7. An incandescent gas mantle formed from a plurality of cloth strands impregnated with an incandescent material, said strands being anchored exteriorly at one end to a mantle holder and at their other end to provide an opening` to permit the llame to impinge the sides and under sulv4 face of the mantle when ignited, said strands being also of zig-Zag form and designed. for independent lateral and longitudinal movement throughout their longitudinal extent.

8. An incandescent gas mantle formed from a plurality of cloth strands impregnated with an incandescent materal, said strands being anchored exteriorly at one end to a mantle holder and at their other end to provide an opening to permit the llame to impinge the sides and under surface of the mantle when ignited, said ends being` rein- 'forced with a pasty fluid.

In testimony ivhereolI We aflix our signatures in the presence of tivo witnesses.

JACOB IGNOT ROBIN. CRYSTOBEL lVlll'lfE.

fitnesses lV. VARRAN Tuition, l-ERTRAM l-I. Ma'rrnnws.

Copies of this patent may be obtained for` ve cents each, 'oy addressing the Commissioner of Patents,

' Washington, It). Q. 

